“I would say between 100,000 and 200,000 cases,” he said, correcting himself to say he meant deaths. “We’re going to have millions of cases.” But he added “I don’t want to be held to that” because the pandemic is “such a moving target.”

About 125,000 cases of COVID-19 in the U.S. had been recorded as of Sunday morning, with over 2,100 dead. It is certain that many more have the disease but their cases have not been reported.

Dr. Deborah Birx, head of the White House coronavirus task force, said parts of the country with few cases so far must prepare for what’s to come. “No state, no metro area, will be spared,” she said on NBC’s “Meet the Press.”

Most people who contract COVID-19 have mild or moderate symptoms, which can include fever and cough but also milder cases of pneumonia, sometimes requiring hospitalization. The risk of death is greater for older adults and people with other health problems. Hospitals in the most afflicted areas are straining to handle patients and some are short of critical supplies.